Counter blade



FIG. 1 illustrates a bottom perspective view of the claimed design;

FIG. 2 illustrates a top perspective view of the claimed design;

FIG. 3 illustrates a bottom view of the claimed design;

FIG. 4 illustrates a top view of the claimed design; and,

FIG. 5 illustrates a front elevational view of the claimed design. 

The ornamental design for a counter blade, as shown and described. 